MI 3321 MultiservicerXA
Machine testing operating mode
135
Trip out current measurement procedure
Select the
RCD I
single test.
Set test
parameters
.
Connect
three wire test lead to the TP1 test port on the instrument.
Connect
the three wire test lead to L,N (downstream of the RCD) and PE terminals
of the machine.
Press the
START
key for the measurement.
Press
SAVE
(F4) key for storing the result (optional).
Examples of RCD trip out current measurement results
Displayed results:
Main result ............. Trip-out current,
t.............................. Trip out time at I
Uci ......................... Contact voltage at trip-out current I
, or end value in case the RCD
didn’t trip.
Ul-pe ...................... Voltage UL-PE
Un-pe ..................... Voltage UN-PE
Note:
The RCD I test will trip the RCD. Assure that the instrument is not powered from a
socket protected by the tested RCD.
9.2.6.4
RCD Autotest
RCD autotest function is intended to perform a complete RCD test and measurement of
all safety parameters (contact voltage, fault loop resistance and trip-out time at different
residual currents) in one set of automatic tests, guided by the instrument.
RCD autotest procedure
RCD Autotest steps
Notes
Select the RCD singe test.
Set
RCD AUTO
test.
Set test
parameters.
Connect
three wire test lead to the TP1 test port on
the instrument.
Connect
the three wire test lead to L, N (downstream
of the RCD) and PE terminals of the machine.
Press the START key.
Start of test
Test with I
N, (+) (step 1).
RCD should trip-out
Re-activate
RCD.
